When Kara (Melissa Benoist) and Alex (Chyler Leigh) investigate the murder of an unregistered alien, the trail leads to an alien fight club run by Roulette (guest star Dichen Lachman), the ringmaster who commands aliens to fight in mortal combat for the entertainment of rich humans. While trying to stop the fighting, Supergirl and Martian Manhunter find themselves up against a surprising opponent. Meanwhile, Hank (David Harewood) is thrilled to have found another Martian and tries to get to know M’Gann (guest star Sharon Leal) better. Supergirl takes Mon-El (Chris Wood) under her wing and begins to train him. James Marshall directed the episode written by Paula Yoo & Eric Carrasco (#204). Original airdate 10/31/2016.

About Karina Espinosa

Karina Espinosa is the Urban Fantasy author of the Sins of the Fallen series and the Mackenzie Grey novels, and a Senior Contributor for HollywoodNewsSource.com. Infatuated with travel, pop culture, and the need to write everything down, she spends much of her days in front of a computer working on her next book, shopping online, and listening to music. With nomadic tendencies, she is currently resting her head in South Florida until the itch to move strikes again. You can usually catch her on Facebook, Instagram, and live-tweeting during episodes of The Walking Dead and Orphan Black. Follow her on social media!